diff -r b758351d191f -r cc9b7e14412b web/lib/django/db/backends/postgresql/operations.py
--- a/web/lib/django/db/backends/postgresql/operations.py	Wed May 19 17:43:59 2010 +0200
+++ b/web/lib/django/db/backends/postgresql/operations.py	Tue May 25 02:43:45 2010 +0200
@@ -6,14 +6,15 @@
 # used by both the 'postgresql' and 'postgresql_psycopg2' backends.
 
 class DatabaseOperations(BaseDatabaseOperations):
-    def __init__(self):
+    def __init__(self, connection):
+        super(DatabaseOperations, self).__init__()
         self._postgres_version = None
+        self.connection = connection
 
     def _get_postgres_version(self):
         if self._postgres_version is None:
-            from django.db import connection
             from django.db.backends.postgresql.version import get_version
-            cursor = connection.cursor()
+            cursor = self.connection.cursor()
             self._postgres_version = get_version(cursor)
         return self._postgres_version
     postgres_version = property(_get_postgres_version)
@@ -162,3 +163,17 @@
             if self.postgres_version[0:2] == (8,2):
                 if self.postgres_version[2] is None or self.postgres_version[2] <= 4:
                     raise NotImplementedError('PostgreSQL 8.2 to 8.2.4 is known to have a faulty implementation of %s. Please upgrade your version of PostgreSQL.' % aggregate.sql_function)
+
+    def max_name_length(self):
+        """
+        Returns the maximum length of an identifier.
+
+        Note that the maximum length of an identifier is 63 by default, but can
+        be changed by recompiling PostgreSQL after editing the NAMEDATALEN
+        macro in src/include/pg_config_manual.h .
+
+        This implementation simply returns 63, but can easily be overridden by a
+        custom database backend that inherits most of its behavior from this one.
+        """
+
+        return 63